I don't want isshiki to lose :(
The thing is, your academic standing also has a say in your position in the elite 10. It's not just the number of shokugeki you win. That's why Jouichrou was only in second place despite being the better chef. He just wasn't as good of a student. Isshiki, from the first time we saw him, already admitted that he hasn't even been attending classes for a really long time. And we don't know his capabilities for when he's SERIOUSLY cooking yet. This arc is the first time we've seen him cook competitively. So he may actually beat tsukasa
My prediction:
Erina wins against momo
Soma wins against rindo
Isshiki loses against tsukasa
Then final bout:
The first years will take on the first elite and win.